2011 EC12 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.55 AU to 1.47 AU from the Sun; one orbit takes 370.7 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.2 AU
- True anomaly
- 136.9°
- Distance from Earth
- 0.443 AU
- As of
- 3 November 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 08h 01m 12s
- Declination
- +52° 33′ 28″
- Constellation
- Lynx
- Distance from Earth
- 0.44 AU
- Elongation from the Sun
- 107.4° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
From your location
See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.
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Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 1.01 AU
- Eccentricity
- 0.451
- Inclination
- 11.56°
- Orbital period
- 370.7 days
- Perihelion
- 0.554 AU
- Aphelion
- 1.466 AU
- Longitude of ascending node
- 346.49°
- Argument of periapsis
- 295.83°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 1.3 LD
- 0.0033 AU
- Tisserand (Jupiter)
- 5.922
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 52
- Data arc
- 3 days
- First observed
- 5 March 2011
- Last observed
- 8 March 2011
- Residual RMS
- 0.34 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 25.8
Discovery & classification
Close approaches 26 on record
Top-down view of the ecliptic, Earth at the centre, for the 2083-02-27 22:19 UTC close approach of 2011 EC12. Catalogue miss distance 114.0 LD · 4.38 × 10⁷ km. The curve is the geocentric path from 2083-02-24 to 2083-03-02, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2083-02-27 22:19:00 | Earth | 0.293 AU | 114.0 LD | 10.2 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB